Which one moves?
The question to settle.
The Sun comes up in the East and goes down in the West. Is the Sun crossing the sky, or are we turning?
📚 Chapter Learning Kit
Earth, Moon, and the Sun · Class 7 Science · Curiosity
English 6 topics 210 leveled MCQs 102 flashcards 5 games Free
Shared by a Veda teacher · Generated with Veda AI · Oct 2026
⚡ Veda Bites
💡 Key Idea
✏️ Example
💡 Tip
💡 Key Idea
💡 Key Idea
💡 Key Idea
The whole idea, one bite at a time
Veda Bites are swipeable micro-lessons — each one teaches exactly one idea. Here's a taste from this kit; the app has the full deck.
The merry-go-round
Ride it and watch.
Left in, right out
Follow one tree.
It comes into your view at your left-hand side and leaves it on your right-hand side.
Globe, torch, dark room
Build it on a table.
Half and half
The first thing you notice.
Half the globe is lit by the torch and half is in darkness. A ball lit from one side can only be lit on one side.
Day and night
Name the halves.
The lit half is having day. The dark half is having night. Both are true at the same moment.
📖 Smart notes
What you'll study, topic by topic
1
The Earth Turns, and the Sun Only Seems To
A ride on a merry-go-round settles an argument about the sky. The trees are not going round you, and the Sun is not going round the Earth.
- The Sun comes up in the East and goes down in the West, every day.
- On a merry-go-round turning anti-clockwise, the objects around appear to turn clockwise.
- A tree comes into view from the left and leaves it on the right.
~40 min · full explanation, examples & memory tricks in the app
2
Day and Night, From One Turning Earth
A globe, a torch and a dark room are enough to make day and night. Half the world is always lit, and you ride into the light every morning.
- A torch about 1.5 metres from a globe, in a dark room, stands for the Sun.
- Half the globe is lit and the other half is in darkness, at every moment.
- The lit half is having day and the dark half is having night.
~40 min · full explanation, examples & memory tricks in the app
3
The Night Sky Appears to Turn Too
Sketch the Big Dipper every two hours and it will have swung round the Pole Star. A boatman on a river explained why, fifteen centuries ago.
- On a clear night between March and May, find the Big Dipper and the Pole Star.
- The Big Dipper is also called Saptarishi, and the Pole Star Dhruva Tara.
- Sketch their positions, then sketch again every two hours.
~45 min · full explanation, examples & memory tricks in the app
4
The Second Motion, and a Sky That Changes
The Earth does two things at once. One gives you day and night; the other slowly changes which stars come out after sunset.
- Besides rotating on its axis, the Earth also travels round the Sun.
- Revolution is the motion of one object around a second object.
- The path along which an object revolves is called its orbit.
~40 min · full explanation, examples & memory tricks in the app
5
Why There Are Seasons
Not because the Earth comes nearer the Sun. Because its axis leans, and a leaning sphere catches sunlight unevenly and for unequal hours.
- The axis of the Earth is not upright with respect to its orbit, but tilted.
- It maintains that same tilt all the way round the orbit.
- The tilt together with the spherical shape gives rise to the seasons.
~50 min · full explanation, examples & memory tricks in the app
6
Eclipses, and How to Watch One Safely
A thumb can hide a friend head, and the Moon can hide the Sun. One of the two eclipses is safe to look at and one can blind you.
- Mercury and Venus appear very small and never block the entire Sun.
- The Moon is the natural satellite of the Earth and revolves around it.
- Apparent size depends on the actual size AND the distance.
~50 min · full explanation, examples & memory tricks in the app
❓ Leveled MCQ practice
Try the smart MCQs from this kit
210 questions laddered from warm-up to topper-level, each with an explanation. A taste:
A child watches the Sun come up over the fields each morning from the same spot in the yard. The Sun rises in the
Beginner
A West
B North
C East
D South
Show answer & explanation
East
And it sets in the West.
Somebody turns the merry-go-round anti-clockwise while you sit on it. The trees appear to turn
Beginner
A clockwise
B anti-clockwise as well, in just the same direction as the ride itself
C not at all
D up and down
Show answer & explanation
clockwise
They appear to turn in the opposite direction to you.
You keep your eyes on one tree for the whole ride. It first comes into view from your
Intermediate
A right-hand side, and then it moves out of your view on the left one
B back, so that it has passed you before you are able to catch sight of it
C feet
D left-hand side
Show answer & explanation
left-hand side
It leaves your view on the right-hand side.
The trees seem to swing past a rider on a merry-go-round, while the trees themselves never move. Motion of that sort is called
Intermediate
A real motion
B apparent motion
C circular motion
D rotation
Show answer & explanation
apparent motion
The trees and the Sun are both examples.
🃏 Flashcards
Tap a card to flip it
102 flashcards in this kit — the app reviews them with spaced repetition so the right card returns on the right day.
🎮 Learning games
Play your way through this kit
Every game is built from this kit's own content — scores feed your mastery, so playing counts as studying.
Categorization
Fact Or Myth
Sequence Builder
Memory Match
Speed Quiz
Playable in the app
Study it properly — free, in the app
The full Veda Bites deck, complete notes, spaced-repetition flashcards, leveled MCQs, tests and games for this kit — plus Daily Facts and the Arena, every day.